There were reductions in amenities, space, and overall upkeep of the property that I couldn't overlook.

Do they work well enough that you do not need to put one in every other non living space (i.e. bathroom, kitchen)?

I've been primarily looking at retail spaces that houses companies like Walgreens, CVS, etc.Any input is great!

Seniors who are downsizing but still want a space for their grandkids?

If they plan on renewing they get the convenience of new AC if not you can install the system during your vacancy and your new tenants can just sign a lease for a higher rent (for the AC upgrade) assuming your market commands it.IDK what how big your units are or the building but if they are small enough and space is limited you might consider a Mitsubishi split.

But I haven't personally done that or spoke to my attorney about it and since you are definitely in that space I'll have to take your word on it.

It's not true to the materials, it's inappropriate to the space, and... it just looks stupid.  

We keep them well maintained and tidy with the idea that good tenants want updated, clean spaces and are willing to pay a bit extra for them.Do I let him stay, at least another year until all the other units are turned, or does he need to move on?  

Commercial space usually takes longer to rent so you should definitely weight that into your decision.

Two of my friends text me photos when they are shopping for furniture, rugs, window treatments-so I can help them decide what to choose.